NASA NTRS · 19730013026
X-ray fluorescence experiment
Abstract
The X-ray fluorescence spectrometer, carried in the scientific instrument module bay of the command and service module, was used for orbital mapping of the lunar surface composition and X-ray galactic observations during transearth coast. The lunar surface measurements involved observations of the intensity and characteristic energy distribution of the secondary or fluorescent X-rays produced by the interaction of solar X-rays with the lunar surface. The astronomical observations consisted of relatively long periods of X-ray measurement of preselected galactic sources such as Cygnus (Cyg X-1) and Scorpius (Sco X-1).
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Adler, I., Trombka, J. I., Gerard, J., Lowman, P., Schmadebeck, R., Blodget, H. W., Eller, E., Yin, L. I., Lamothe, R., Osswald, G.. 1972-01-01. X-ray fluorescence experiment. https://ntrs.nasa.gov/citations/19730013026
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